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Finding the Fourth Proportional to 665,189.04, 917,959.32 and 363,385.20

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Solution

The fourth proportional to 665,189.04, 917,959.32 and 363,385.20 is: 501,470.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,189.04 : 917,959.32 = 363,385.20 : x
  2. Step 2: Convert to fraction form
    665,189.04/917,959.32 = 363,385.20/x
  3. Step 3: Cross multiply
    665,189.04x = 917,959.32 × 363,385.20
  4. Step 4: Simplify right side
    665,189.04x = 333,572,831,090.06
  5. Step 5: Solve for x
    x = 333,572,831,090.06/665,189.04
  6. Step 6: Final answer
    x = 501,470.73

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.